My fault...a recent engine change apparently introduced in incompatibility with the start conditions for the older mod type New Game script logic. I did not think to check that and I only checked that the older ones would still launch and did not check further. I located the problem for New Game and just uploaded a fix to the Maelstrom Engine.
Thank you for bringing the problem to my attention. Download the latest Maelstrom update and this problem should be resolved now.